Type-writer action.



J. ALEXANDER.

TYPE WRITER ACTION.

AJBPLIOATION FILED JUNE 22, 1911.

2 SHEETS-SHBET 1.

N E m a ll" WITNESSES I/WE/VTOR Patented Oct. 15, 1912.

J. ALEXANDER.

TYPE WRITER ACTION. APPLICATION FILED JUNE 22, 1911.

Patented Oct. 15, 1912.

2 SHEETSSHEET 2.

WITNESSES ATTORNEY 35 1 v varying the tension. The key lever carries aaction.

- stud or suitable projection -arm.24 with a curvedbearing. surface 25and useful Im UNITED STATES PATENT OFFICE. Y

JESSE ALEXANDER, or NEW YORK, iv. 31., ASSIGNOR or ONE-HALF r0 HUDSONBIDWELL, or vnw YORK, N. Y.

TYPE-WRITER ACTION.

Specification of Letters Patent.

Patented Oct. 15,1912.

Application filed June 22, 1911. Serial No. 634,705.

To all whom it may concern:

citizen ofthe United States, and resident of New York in' the county ofKings and State ofNew York, have invented certain new rovements inType-Writer Actions, of WhlCh the following is a specification.

My invention relates particularly to a key and type. bar mechanism for afront stroke visible writing machine.

The object is to provide a light but strong and durable construction inwhich the touch is very light and yet in which greatpressure may beexerted when desired for manifolding etc. V i

7 Another object is to secure rapidity of The details of the inventionare illustrated in the accompanying two sheets of drawings. Figural is avertical section of a machine showing a side view of .one unit of a keyand type bar mechanism embodying the improvements of my inventionshowing the parts in the position of rest. Fig. 2, is a perspective viewof parts of the type bar mechanism separated. Fig. 3, is'a view similarto Fig. 1 showing the parts in the printing position. The keylevers suchas 1 are all pivoted at the rear of the machine as for instance, onpivots such as 2 carried by the frame .3. Each key lever has an upwardlyprojecting finger 4 under tension of a spring 5. The latter is securedto the end 'ofa screw 6 which is adjustable in the frame of the machinefor 7 for engaging the intermediate lever which will be hereinafterdescribed.

The rear end of the type bar has an arm 16' carrying the roller 17 Thetype bar has a lug 18 for the pivot 11 and a. lug 19 for connecting tothe intermediate lever 20.

' Theintermediate/lever 20 is pivoted at 21' and has a forwardlyprojecting arm 22 with a. slot 23 to engage the stud7 on the key lever.The upperend of the lever 20 has an -on its pivot 21.

e sed by the wall .and similar purposes. lever is released a shortdistance, the type adapted to cooperate with the roller 17 to start thetype bar in its upward movement.

The intermediate lever also has an arm 26 with a slot 27. The link 28carries a in 29 which fits in the slot 27. The link 28.1s ivotallyconnected to the lug 19 of the type bar by the pin 30.

When the key lever 1 is depressed the con "nection between the stud 7and arm 22 causes "the intermediate lever 20 to be rocked The arm 24moving forwardly presses the roller 17 and arm 16 of the type bardownward and forward and thus raises the type 13 to the printingposition, the roller 17 rolling along the curved surface 25 of the .arm24. Near the latter part of the movement of the type bar 10 the pin 29carried by the link 28 is forcibly onof the slot 27 in the arm 26 anddirect'pressure is brought to bear in atoggle-like manner to press thetype against the platen 3.1. In Fig. 3 it will be noted that in theprinting 21, arm-26, pin 29,- link 28 and pivot pin 36 are very nearlyin a straight line with the type bar'lO. This enables me to secure agreat amount of pressure for manifolding As soon as the key bar is freeto fall back to its normal position of rest. A stop 32 may be providedon the face of the plate 12 to limit the-stroke of the type bar ifdesired. p

The carriage construction is not illustrated herein but may include atoothed rack such as 33to cotiperate with an escapement dog 34 pivotedat 35. This dog has the depending arm 36 connected at its lower end to auniversal frame 37 having a universal bar 38 for engagement by theshoulders such as 39 on the intermediate levers. In this manner thecontrol of the carriage and ribbon mechanism is effected through the me'dium of the intermediate levers.

In the form shown I have illustrated a ribbon guide 40 connected to abell crank lever 41 pivoted at 42. One armof this lever is connected bylink 43 to the arm '36.

The arm 36 may be under the tension of a spring44 and in this mannerresistance is offered to the movement of the ntermediate levers andaforceis provided for assisting,

position the pivot I 25 therefor,

in returning the intermediate lever and attached parts to their normalposition of rest when released.

What I claim is v "3 1. In a key and type barmechanism, a pivoted keylever, a pivoted type bar, a pivoted intermediate lever connected tosaid key lever, a link connecting said intermediate lever and said typebar, said type 1' bar and said intermediate lever each having aprojecting arm in rear of said link, said arms being adapted tocooperate with each other through a part of their movement.

2. In a key and type bar mechanism, a

' pivoted type bar having a-rearwardly and downwardly projecting arm anda lug located between the end of said arm and the printing end of saidtype bar beneath the type bar pivot, a lever having an arm forcooperating with said type bar arm through a part of its movement and alink connecting said lever and said lug on said type bar.

3. In a type bar action, a type bar, a pivot a roller carried by saidtype bar,

a pivoted lever having an arm for engaging said roller and a linkconnecting said arm and 'said type bar. 1

4. In a type bar action, a type bar, a pivot therefor, a roller carriedby said type bar,

a pivoted lever having an arm for engaging said roller and a linkconnecting said arm and said type bar beneath said pivot.

' 5. In a type bar action, a type bar, a pivot therefor, a rollercarried by said type bar, a pivoted lever having an arm for engagingsaid roller and a link connecting said arm and said type bar beneathsaid pivot and between said roller and the printing end of said typebar.

6. In a type bar mechanism, a pivoted type .bar having a downwardly andrearwarclly v8. In a type bar mechanism, a pivoted type bar having aprojecting arm, a lever having an arm for engaging said pro ecting armand a second arm havlng an elongated slot'and a link pivotally connectedto said type bar and having a pin engaging in said slot. I

9. In a type bar mechanism, a pivoted type bar having a projecting arm,a lever having an arm for engagingsaid projecting arm and a second armhaving an elongated slot, a link pivot-ally connected to said type barand having a pin engaging in said slot, and a key leverforoperating saidparts.

JESSE ALEXANDER.

Witnesses:

WARD W. SMITH,

Hnosoiv BIDWELL.

Copies of this patent maybe obtained for five cents each, by addressingthe Commissioner of Patenta.

Washington, D. G. v

